3.11 Anatomy of the Thoracic Wall

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Author:
xangxelax
ID:
258307
Filename:
3.11 Anatomy of the Thoracic Wall
Updated:
2014-01-25 13:40:54
Tags:
CP2
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CP2
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CP2
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  1. Why is rib 2 considered atypical?
    • Has 2 heads but has a roughened tubercle
    • Serratus anterior attaches there
  2. What are true ribs?
    • Ribs 1-7
    • Attaches to sternum
  3. What are false ribs?
    • Ribs 8-12
    • Doesnt directly attach to sternum
  4. What are typical ribs?
    • Ribs 3-9
    • Has head, neck, body, tubercle
  5. Contraction of what muscles causes forced inspiration and what movement of the rib cage?
    • External intercostal muscles
    • Rib cage to elevate
  6. Contraction of what muscles causes forced expiration and what movement of the rib cage?
    • Internal intercostal muscles
    • Rib cage to compress
  7. Contraction of external intercostal muscles causes what and forced what?
    • Causes rib cage to elevate
    • Forced inspiration
  8. Contraction of internal intercostal muscles causes what and forced what?
    • Causes rib cage to compress
    • Forced expiration
  9. How are the external intercostal muscles angled in relation to the adjacent rib?
    Angled downward and forward
  10. How are the internal intercostal muscles angled in relation to the adjacent rib?
    Angled downward and backward
  11. Posterior intercostal artery is a branch of...?
    Aorta
  12. Anterior intercostal artery is a branch of...?
    Internal thoracic artery
  13. Internal thoracic artery is a branch of...?
    Subclavian artery
  14. An aortic dissection travels through which layer?
    Tunica media

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